subtraction note: gwt implements this individually
arithmetic right shift
logical right shift
(runtimeLong: StringAdd).+(other)
(runtimeLong: StringAdd).self
(runtimeLong: StringFormat).self
(runtimeLong: ArrowAssoc[RuntimeLong]).x
(Since version 2.10.0) Use leftOfArrow
instead
(runtimeLong: Ensuring[RuntimeLong]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
emulate a Java-Long using three integers. taken from gwt LongLib: com.google.gwt.lang.LongLib
only used by runtime
holds values l, m, h (low, middle, high) s.t. (x.l + ((long) x.m << 22) + ((long) x.h << 44)) is equal to the original value